Lattice solitons in PT-symmetric mixed linear-nonlinear optical lattices

被引：181

作者：

He, Yingji ^{[1
]}

Zhu, Xing ^{[2
]}

Mihalache, Dumitru ^{[3
]}

Liu, Jinglin ^{[1
]}

Chen, Zhanxu ^{[1
]}

机构：

[1] Guangdong Polytech Normal Univ, Sch Elect & Informat, Guangzhou 510665, Guangdong, Peoples R China

[2] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[3] Horia Hulubei Natl Inst Phys & Nucl Engn, RO-077125 Magurele, Romania

来源：

PHYSICAL REVIEW A | 2012年 / 85卷 / 01期

基金：

中国国家自然科学基金;

关键词：

GAP SOLITONS; REAL; MODES;

D O I：

10.1103/PhysRevA.85.013831

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the existence and stability of lattice solitons in parity-time (PT)-symmetric mixed linear-nonlinear optical lattices in Kerr media. We focus on studying the characteristic effects on soliton propagation in the semi-infinite gap if we consider different amplitudes of real and imaginary parts of both the linear refractive index modulation profile and of periodic nonlinearity-modulation spatial distribution. It was found that the combination of PT-symmetric linear and nonlinear lattices can stabilize lattice solitons and can provide unique soliton properties. It is revealed that the parameters of the linear lattice periodic potential play a significant role in controlling the extent of the stability domains and that the lattice solitons can stably propagate only in the low-power regime.

引用

页数：6

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